[lkml]   [2006]   [Mar]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: Spurious rebuilds of raid6 and drivers/media/video in 2.6.16
Sam Ravnborg schrieb:
> On Thu, Mar 30, 2006 at 01:55:55PM +0200, Carl-Daniel Hailfinger wrote:
>>if I copy a compiled kernel tree to another location and run
>>make again in the new directory, a few files always get rebuilt.
>>These files only are rebuilt if the tree is a copy of another
>>tree and they are rebuilt only once.
>>Any ideas why this is the case?
> The reason why the predictive rebuild happens is that in some parts
> of the kbuild files it has been necessary to use absolute paths.
> One example is the oiu2c shell script where we use the full path
> to locate the shell script.
> The reason why a full path is used is that this shall also work when
> compiling the kernel using make O=...

Thanks for the information.

> So the rebuild will happen. It would be possible to minimize the places
> where a rebuild is triggered when moving the source tree, but I have not
> seen any benefit doing so lately.

Well, it would cause less confusion. It seems that ~90% of rebuilt files
are due to the following makefiles where full paths to includes are

Any objections to fix these?

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-03-30 22:52    [from the cache]
©2003-2014 Jasper Spaans. hosted at Digital Ocean